CN104731431B - Capacity-type electronic dog for the visualization device including capacitive touch sensitive surfaces - Google Patents
Capacity-type electronic dog for the visualization device including capacitive touch sensitive surfaces Download PDFInfo
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- CN104731431B CN104731431B CN201410858248.1A CN201410858248A CN104731431B CN 104731431 B CN104731431 B CN 104731431B CN 201410858248 A CN201410858248 A CN 201410858248A CN 104731431 B CN104731431 B CN 104731431B
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- sensitive surface
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- 238000012800 visualization Methods 0.000 title claims abstract description 28
- 239000011159 matrix material Substances 0.000 claims abstract description 22
- 238000004891 communication Methods 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 238000004458 analytical method Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 28
- 238000009826 distribution Methods 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 11
- 230000001360 synchronised effect Effects 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 5
- 230000008901 benefit Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000011469 building brick Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/002—Specific input/output arrangements not covered by G06F3/01 - G06F3/16
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/039—Accessories therefor, e.g. mouse pads
- G06F3/0393—Accessories for touch pads or touch screens, e.g. mechanical guides added to touch screens for drawing straight lines, hard keys overlaying touch screens or touch pads
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0441—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using active external devices, e.g. active pens, for receiving changes in electrical potential transmitted by the digitiser, e.g. tablet driving signals
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0442—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
Abstract
A kind of capacity-type electronic dog for including the visualization device of capacitive touch sensitive surfaces.Substantially field of the invention belongs to capacity-type electronic dog, it is used together with the visualization device for including capacitive touch sensitive surfaces, capacitive touch sensitive surfaces include the matrix (110) of conductive row and column, in operational use, cyberdog is arranged on the touch sensitive surface, cyberdog is operated with reception pattern in a transmitting mode.Cyberdog according to the present invention includes :-for the device (230,240) of the specific frequency sending cycle analog signal of referred to as cyberdog frequency；Planar annular conductiving metal part (210), is connected to the sending device, and the component is intended to be placed on the touch sensitive surface；For receiving the device (250,260) of the reception signal exported by the conductiving metal part；For analyzing the device (270,280,290) of the digitized received signal；For storing the transmitted device with the signal of analysis；Interface for digital communication (295).
Description
Technical field
The field of the invention belongs to the visualization device including capacitive touch sensitive surfaces.More specifically, skill of the invention
Art field, which belongs to, realizes the equipment for exchanging information with this kind of visualization device.In the rest part of this paper, these can be filled
Set referred to as cyberdog (dongle).
Background technique
Traditionally, in order to exchange information with visualization device, there are two kinds of possible major techniques.The first is in equipment
Upper arrangement electrical connection, is then connected to the equipment for exchange external equipment or cyberdog.The most common example is USB (logical
With universal serial bus) key.Second of technology is connected using wireless electric.Foremost is WiFi (Wireless Fidelity) connection.
But it is implicitly present in the application of visualization device Total enumeration, without wasting any useful surface.This obviously includes
Instrument panel, wherein whole surface is existing dedicated for visualization screen.In the case, it is not easy to simply arrange electricity
Gas interconnection technique.Still it can increase connector at the back side of visualization device, the visualization device, which is connected to, to be arranged in visually
Change below equipment or other connectors of side, but these arrangements necessarily make the layout of visualization and instrument panel complicated
Change.The use of wireless connection is also required to increase hardware resource, these connections can be poorly suited for further by radio interference
Flight use.
Summary of the invention
In numerous applications, visualization device has touch sensitive surface.A kind of technology used is so-called " projection " capacitor
Formula detection.This technology is to generate the detection matrix being made of conductive row and column, arranges conductive row and column to detect in capacitor
Localized variation, as long as the localized variation in capacitor be by the close of any other indicator body of the finger or conduction of user and
It is caused.Subject of the present invention is to communicate using for detecting the device changed in capacitor with visualization device.In fact,
In its true spirit, cause any signal of known variation in capacitor that can be identified by touch sensitive surface, as long as the surface
With software program needed for its identification.Thus, cyberdog according to the present invention can be not necessarily to any further hardware modifications
In the case where, by the way that simply equipment is placed on this touch sensitive surface, with the visualization including capacitive touch sensitive surfaces
Equipment communication.Specifically, subject of the present invention is a kind of capacity-type electronic dog, is intended to and include capacitive touch sensitive surfaces
Visualization device is used together, and capacitive touch sensitive surfaces include the matrix of conductive row and column, in operational use, by cyberdog cloth
It sets on the capacitive touch sensitive surfaces, cyberdog is operated with reception pattern in a transmitting mode, it is characterised in that it is included at least:
It is used for the device of sending cycle analog signal, is sent at least one specific frequency of referred to as cyberdog frequency
The signal；
Planar annular conductiving metal part, is connected to the sending device, and the component is intended to be placed on the capacitor
On formula touch sensitive surface；
For receiving the device of the reception signal exported by the conductiving metal part；
For analyzing the device of the digitized received signal；
For storing the device of the signal of the signal and analysis that send；
Interface for digital communication.
Advantageously, reception device includes:
It is known as the device of " envelope detected ", is determining being sent in amplitude and frequency range by touch sensitive surface for detecting
Signal, to detect the presence of the capacitive touch sensitive surfaces, described device operates in passive mode, i.e., not by send fill
Set the signal transmission of progress；
Synchronous demodulation device is operated with cyberdog frequency or multiple frequencies, so as in a receive mode with the touch-sensitive table
Face communication.
Advantageously, the thickness of ring and a spacing of the matrix of capacitive touch sensitive surfaces are essentially equal.
Advantageously, cyberdog includes suction disc equipment, allows to for cyberdog being maintained at suitable on capacitive touch sensitive surfaces
Work as position.
It, can with being defined as above and capacitor the invention further relates to a kind of visualization device, including capacitive touch sensitive surfaces
Formula cyberdog exchanges data, so that touch sensitive surface includes:
The matrix of conductive row and column；
For identifying the device of determining distribution map, the distribution map when cyberdog is placed on the touch sensitive surface
Corresponding to the variation by planar annular conductiving metal part on the row and column of matrix in caused capacitor；
Device for being sent and received with specific electron dog frequency.
Advantageously, the screen of visualization device includes by the certain bits of the special symbol label of the position reservation for cyberdog
It sets.
Finally, the present invention relates to a kind of sides communicated between capacity-type electronic dog and visualization device with being defined as above
Method, which is characterized in that when cyberdog to be placed on capacitive touch sensitive surfaces, the described method comprises the following steps:
Step 1: by point of the determination of the planar annular conductiving metal part of the identification device identification cyberdog of touch sensitive surface
Butut；
Step 2: what the detection device identification by being known as the cyberdog of " envelope detected " was sent by touch sensitive surface in operation
Signal；
Step 3: the preparation of the cyberdog operation mode of touch sensitive surface, sending device are transformed into for sending cyberdog frequency
Mode, the reception device of touch sensitive surface is transformed into the mode for receiving cyberdog frequency；
Step 4: being operated in electronics dog pattern, touch sensitive surface and cyberdog are with cyberdog frequency exchange signaling.
Advantageously, step 4 is executed in a half duplex mode, and cyberdog and touch sensitive surface are handed over identical specific electron dog frequency
For being sent and received.
Advantageously, step 4 is executed in the full-duplex mode, and cyberdog is same with different specific electron dog frequencies from touch sensitive surface
Shi Jinhang sends and receives.
Advantageously, during the step 4, the transmission and receiving device of touch sensitive surface only annular flat of the scan arrangement in cyberdog
The conductive row and column of matrix below the conductiving metal part of face.
Detailed description of the invention
After reference attached drawing has read following non-limitative illustration, it will be better appreciated by the present invention, and other advantage meetings
It becomes apparent, in the accompanying drawings:
Fig. 1 shows the overall block-diagrams of touch sensitive matrix plate；
Fig. 2 indicates the block diagram of cyberdog according to the present invention；
Fig. 3 indicates the capacitive coupling according to the present invention between touch-sensitive plate and cyberdog；
Fig. 4 indicates the top view of the detection ring for the cyberdog being placed on touch-sensitive plate；
Fig. 5 indicates the capacitance profile figure of the cyberdog perceived by touch-sensitive plate；
Fig. 6 indicates the sectional view for having suctorial cyberdog.
Specific embodiment
Cyberdog according to the present invention is intended to be used together with the touch-sensitive plate of condenser type.Illustratively, Fig. 1 shows touch-sensitive squares
The overall block-diagram and its related electronic devices of battle array plate 100.Matrix 110 is made of conductive row and column, and the conduction row and column is logical
Often it is made of ITO (tin indium oxide).Normally, this touch sensitive surface can have for an Avionic Instrument panel screen
About 50 column with about 30 rows.Illustratively, the spacing between two rows is in about 7 millimeter orders.
Electronic component 120 consists essentially of:
Device 121 and 122 is used for sending cycle signal, it is intended to power to row and column；
- DAC (digital analog converter) 131 and 132, is arranged at the output of sending device；
Multiplex machine 141 and 142 is arranged at DAC output, is carried out to not going together for matrix and different lines continuous
Addressing；
- ADC (analog-digital converter) 151 and 152, is arranged at the output of multiplex machine；
Synchronous demodulator 161 and 162, is arranged at the output of ADC；
For addressing the electronic device 170 of row and column；
Device 180, the digital processing of the signal for exporting from synchronous demodulator allow to determine the row in matrix
With the variation in capacitor caused in column.Each demodulator allows to the amplitude and phase of the signal of transmission process；
Input-output interface 190.
The production of electronic component can be realized in a variety of forms.It may include traditional components or ASIC (dedicated integrated
Circuit) component, for the analogue type or mixed type for so-called " front end " analog component, " front end " analog component is executed
Voltage introducing, current measurement, multiplexing and analog-digital conversion function.It may include (scene can for the FPGA of digital processing
Programming gate array) component of type is integrated into FPGA or in contrast or including microcontroller.
The quantity of ADC is higher, it is higher to touch detection speed, and the waiting time is shorter.The block diagram packet indicated in Fig. 1
It includes and is exclusively used in capable ADC 131 and DAC 151, and be exclusively used in the ADC 132 and DAC 152 of column.
Illustratively, two different frequencies can be used for row and touch detection, and two other different frequencies are used
Detection is touched in column.In order to which different frequency does not interfere each other, they are selected as " orthogonal ", this is indicated for different synchronous solutions
Adjust the integrated time of device identical, which is the exact multiple in each period.This be arranged such that can simultaneously scan line
With column, and between the signals be not present any interference.
It can be realized in " self-capacitance " mode and/or " mutual capacitance " mode and touch detection.First mode is to read matrix
Push-button array row and column.Second mode is to read each crosspoint of the array of row and column of matrix.First mode makes
Touch sensitive surface can be searched for rapidly by obtaining, and is positioned and touched possible coordinate.Second mode allow to differentiate actually touch with
" puppet " is touched.
Touch sensitive surface according to the present invention further include:
Device, for when cyberdog to be placed on the touch sensitive surface, identification to correspond to by planar annular conductive gold
Belong to the distribution map of component determination of the variation of caused capacitor in the row and column of matrix；
Device, for being sent and received with specific electron dog frequency or multiple frequencies.
As described above, capacity-type electronic dog according to the present invention is intended to and the visualization device including capacitive touch sensitive surfaces
It is used together.The function of cyberdog is to send and receive characteristic using the signal of touch-sensitive plate to send and receive numerical data.
When operating with, cyberdog is arranged on capacitive touch sensitive surfaces.
Generally, capacity-type electronic dog includes:
Device is used for sending cycle analog signal, sends institute at least one specific frequency of referred to as cyberdog frequency
Signal is stated, the cyberdog frequency is compatible with the frequency of touch-sensitive plate；
Planar annular conductiving metal part, is connected to the sending device, and the component is intended to be placed on the capacitor
On formula touch sensitive surface, and ensure the transmission and reception of data；
Device, for receiving the signal received exported by the conductiving metal part；
Device, for analyzing the digitized signal received；
Device, for storing the signal of the signal and analysis that send；
Interface for digital communication.
Illustratively, capacity-type electronic dog 200 according to the present invention is illustrated in Fig. 2.It includes 210 sum aggregate of capacitor ring
At electronic building brick 220.
Electronic building brick includes and device as touch-sensitive flat-type.They are:
Voltage generator 230；
-DAC 240；
Analogue transmission-reception sub-component 250 can generate on conducting ring 210 and receive sinusoidal voltage.Fig. 2's
In diagram, in a receive mode, the capacitance current exported by the measurement of resistance 251 by the generator of touch sensitive surface, order of magnitude allusion quotation
It is type 1K Ω；
-ADC 260；
Synchronous demodulator circuit 270；
Envelope detector 280 allows to independently detect the electric signal exported by touch-sensitive plate with its frequency
In the presence of；
Device 290, the digital processing of the signal for being exported by synchronous demodulator allow to determine in matrix
Variation in row and column in caused capacitor.Each demodulator allows to transmit the amplitude and phase of handled signal
Position；
Input-output interface 295.
The reference potential on analog circuit 250 or " ground " is linked to the outer conductive elements contacted with the hand of operator, to borrow
" ground " is helped to obtain necessary common-mode feedback.Power supply to cyberdog can be completed by battery or battery, otherwise, in connecting line
Cable is just completed by the latter in the case where being connected to laptop or electronic plane.This power supply is not presented in Fig. 2.
By by cable or byThe connection of the wireless connection of type, cyberdog can independently carry out and touch-sensitive screen
Data exchange, or be used as simple interface, it is describedIt is the quotient of Bluetooth Special Interest Group
Mark, is connected to plate or laptop for cyberdog.
Cyberdog can have different types of keys or buttons, to implement the different operation being such as powered.
Fig. 3 indicates the different capacitors for the contact surface being present between cyberdog and the row and column of touch sensitive surface.Every a line
111 all have capacitor 113, and each column 112 all have capacitor 114.Each row and column crosspoint all has mutual capacitance 115.In electricity
Coupling between sub- dog and touch sensitive surface has capacitor 300.The Machine Design of cyberdog considers the metal near conducting ring
The presence of quality, mode are changing in groups not by the excessive of the conductive component close to ring in the capacitor perceived by touch sensitive surface
Disturbance.Connection inductance between this ring and the electronic component of the cyberdog of the hand of touch operation person centainly cannot be excessively high.Electricity
The value of the equivalent capacity 252 of sub- dog can be relatively high, i.e., with head office capacitor 112 or column capacitance 113 in the identical order of magnitude.
When cyberdog is applied to visualization screen, the electronic component detection of touch sensitive surface is located at the becket of cyberdog
The variation in capacitor in following row and column.Group variation indicates the geometry of the conductive surface of cyberdog.Must with
Groups of capacitance variations in the normal use of touch sensitive surface are significant, and are easy to touch phase by the finger with operator
Compare to distinguish and select this shape otherwise.For the ease of identification, preferably without any specific orientation by capacitance electronic dog
Place any position on the screen.In addition, the contact component of cyberdog is ring-shaped, so that the orientation of cyberdog not phase
It closes.
Fig. 4 is expressed as some rows 112 of the touch sensitive surface 110 of dotted line and some column of the touch sensitive surface 110 for white
111.The row and column of touch-sensitive plate in Fig. 4 has so-called " diamond " structure.Circulating electron is indicated with black in this Fig. 4
The conducting surface 210 of dog.Difference between two radiuses of ring must be essentially equal with a spacing of the matrix of touch-sensitive plate.
Term spacing is understood to mean that the distance for separating two continuous row or column.Outer dia must be sufficiently large, is retaining reasonable size
While, capacity effect can be differentiated according to any label, so that acceptable size is stayed in environmental protection.Good compromise is inner ring
With the radius for being equal to about two spacing, outer ring has the radius equal to 3 spacing, that is, one 7 millimeters of spacing are come
It says, the outer radius of cyberdog ring is about 20 millimeters.
Caused by the placement as cyberdog detected on the row of touch sensitive surface is illustrated in a manner of theoretic in Fig. 5
Changes delta C in capacitor.Obtain distribution map P, including two peak value PP, by surrounding central channel CPRing interior diameter interval
It opens.This distribution map is identical on matrix column.Certainly, active position of this distribution map with cyberdog on touch sensitive surface
Variation and it is slightly changed.
Transmission for the large capacity file in sending mode or reception pattern, transmission cycle can be relatively long.But it can
It is usually vertical or subvertical depending on changing screen.In this case, it is possible to be equipped with sucker for cyberdog, allow to
Cyberdog is fixed to touch-sensitive plate.Thus, user need not pin cyberdog during the transmission.This solution is in Fig. 6
It shows, indicates the sectional view of cyberdog 200.The latter includes sucker 201, is activated by spring piston 202.Moreover, by this
Cyberdog is maintained at same position by a sucker, it is not necessary to constantly detect and track the position of cyberdog again.In the case, it shakes
Width information can be used for transmitting, and with addition of the quantity for the bit of each symbol transmitted, and improve transmission bit rate.
The method packet communicated between capacity-type electronic dog according to the present invention and the visualization device including touch sensitive surface
Include following steps:
Step 1: by point of the determination of the planar annular conductiving metal part of the identification device identification cyberdog of touch sensitive surface
Butut；
Step 2: being sent in operation by touch sensitive surface by the detection device identification for being known as " envelope detected " of cyberdog
Signal；
Step 3: the preparation of the cyberdog operation mode of touch sensitive surface, sending device are transformed into for sending cyberdog frequency
Mode, the reception device of touch sensitive surface is transformed into the mode for receiving cyberdog frequency；
Step 4: being operated in electronics dog pattern, touch sensitive surface and cyberdog are with cyberdog frequency exchange signaling.
In step 1, touch sensitive surface is in normal operating and touches in detection pattern.The identification of capacity-type electronic dog only passes through
The identification of the shape of the capacitor ring of cyberdog is completed.At this stage, cyberdog is in spare space, initial when being powered
Change.It does not generate any signal, and its synchronous demodulator does not work.But its envelope detected function keeps suspend mode.This makes
The contact with touch sensitive surface can be detected by the detection of the amplitude of signal in relevant frequencies range by obtaining it, this is synchronous solution
Adjust device impossible, because they do not know the exact value of discussed frequency.
Really, the different screen of the same instrument face plate is worked with different frequency, so that touch sensitive surface does not interfere each other.
Therefore, cyberdog primarily ignores the frequency used by its touch-sensitive plate disposed thereon.
Touch sensitive surface detects the distribution map of row and column self-capacitance variation.This distribution map has type shown in fig. 5.Pass through
The ratio for detecting the amplitude of the peak swing and central channel of two maximum known to its relative distance of distribution map or peak value comes
It is simply completed detection.More advanced identification device can be used.When this first step is completed, the position of cyberdog has been known
Set coordinate.In modification, system can show special symbol, indicate " footprint " of cyberdog, and prompt operator by electronics
Dog is placed on it face.Thus, the position of cyberdog has been known completely.
Concurrently, in the second step, the envelope detector detection of cyberdog is acceptable in suitable frequency range
The presence of the signal of amplitude allows to detect the presence of the touch-sensitive plate of work.Cyberdog starts its synchronous demodulator, is in
Stand-by state is to receive message from touch-sensitive plate.
In third step, touch sensitive surface is transformed into cyberdog operation mode.Touch sensitive surface is in specific electron dog frequency
The carrier frequency for configuring its generator with visualization screen is known to generator.Preferably, the frequency of cyberdog is selected
It is selected as being not used in the frequency for touching detection.In the example of fig. 1, touch sensitive surface is worked with four frequency generators, and four specific
Frequency is exclusively used in cyberdog, to optimize the use of available hardware resource.Make these frequencies to known to cyberdog by design.
Plate sends the first message of identification then to cyberdog.In standby mode, and have been detected by with it is touch-sensitive
The cyberdog of the current potential of surface contact, when will test the message sent by touch sensitive surface, and will wait specific after the end of message
The termination of the area of a room.
In four steps, implement the transmission of data.Cyberdog actually has received that by the first of touch sensitive surface transmission
Beginningization message, and waited elapsed time amount after its.
Cyberdog subsequently enters " master " mode, is used for half-duplex transmission.In this mode, cyberdog is with touch sensitive surface with phase
Same specific electron dog frequency alternately sends and receives.After it have passed through the time quantum, touch sensitive surface also enters " from " mould
Formula, while it waits the communication of cyberdog instruction.
It needs to be most suitable for considered transmission, and is best utilized in the sense that available hardware resource
For, semiduplex mode is advantageous.But the so-called full-duplex mode of communication is completely achievable.In this mode, electric
Sub- dog sends and receives in different specific electron dog frequencies simultaneously from touch sensitive surface.In this case, it is possible to by a frequency
Or multiple frequencies distribute to a direction of communication, remaining distributes to another direction.Touch-sensitive plate is made of row and column,
It can also will go with corresponding sending device dedicated for sending mode, will arrange with corresponding reception device dedicated for reception mould
Formula.
Certainly, if cyberdog without reception message and is replied in given amount, as long as being still specifically detected electricity
The presence of sub- dog, touch sensitive surface just periodically re-emit new initial message.
The cyberdog being arranged in holotype is transmitted to touch sensitive surface successfully obtains message, and instruction establishes communication, and
And cyberdog is handling it.
Illustratively, communication protocol is similar to the communication protocol of conventional half duplex transmission, such as in RS-232 or RS-485
The agreement usually transmitted on medium.
During this stage in electronics dog pattern, for half-duplex operation, the electronic component of touch sensitive surface is constantly
Scan region corresponding with the surface covered by cyberdog.When touch sensitive surface is sent, it measure the row that so covers with
The capacitor read on column.When cyberdog is sent, acted in a similar way by measuring received signal.
Capacitor and the differentiation for receiving signal distribution plots allow to detect any variation in the changing coordinates of cyberdog.Cause
And constantly confirm the presence of cyberdog, and constantly refresh its accurate coordinate.This allows to be constantly tracked cyberdog
Position in variation, provide good using flexible for operator, the latter can slightly move.Due to only scanning
Corresponding to the minimal surface of cyberdog, therefore optimize the time for distributing to the communication of data.
In fact, simplified hardware embodiments are systematically scanned entire touch sensitive surface and are sufficient.But
When measuring the row and column far from cyberdog, the signal of transmission can become excessively faint, so that it cannot the communication being successfully established.?
At these moment, data are not transmitted, in being reduction of averagely useful bit rate.
Implement the transmission of data on several sinusoidal carriers.By the linear resistance institute of the conductive row and column by touch sensitive surface
Caused decaying, it is preferable that the frequency of these carrier waves is maintained to touch the lower end of the frequency of detection.Possible maximum
Frequency depends on the characteristic and its size of touch sensitive surface.Typically, this maximum frequency has the value of several hundred kHz.
The period of the symbol of transmission is slightly above the integrated time of synchronous detection, and inverse corresponds to the interval of orthogonal frequency.
For the time cycle of 50 μ s, the bit rate that each symbol obtains is 20kHz.
Peak transmission bit rate correspond to each symbol bit rate multiplied by each symbol bit quantity, multiplied by carrier wave
Quantity product.
Due to a large amount of bits of a large amount of carrier waves and each symbolic coding that use, the transmission of OFDM (orthogonal frequency division multiplexing) type
Allow relatively high bit rate.
In the case where system has the device for generating and demodulating four carrier frequencies, QPSK (quadriphase PSK) or
It is each symbol dibit provided by the modulation of DQPSK (Differential Quadriphase Shift Keying) type.Peak bit rate then has 160
The value of Kbaud, the bit rate are sufficient to the transmission corresponding to RS-232 or ARINC-429 standard.In order to double bit rate,
It is also contemplated that using twice of phase value of QPSK modulation.
The modulation of phase, which provides only, to be simplified coding during the transmission and is preserved for tracking the shifting of cyberdog on the screen
The advantages of dynamic amplitude information.
In the case where cyberdog is placed determination position on the screen, amplitude is can be used in symbolic coding.Preferably,
The selection signal screen position minimum due to the decaying of the resistance characteristic of row and column.
Claims (10)
1. a kind of capacity-type electronic dog (200), it is intended to make together with the visualization device for including capacitive touch sensitive surfaces (100)
With capacitive touch sensitive surfaces include that cyberdog is arranged in the electricity in operational use by the matrix (110) of conductive row and column
On appearance formula touch sensitive surface, cyberdog is operated with reception pattern in a transmitting mode, it is characterised in that it is included at least:
It is used for the device (230,240,250) of sending cycle analog signal, at least one with referred to as cyberdog frequency to be specific
Frequency sends the signal；
Planar annular conductiving metal part (210), is connected to sending device, and the component is intended to be placed on the condenser type
On touch sensitive surface, the variation in capacitor caused by the placement as cyberdog detected on the row of touch sensitive surface has symmetrical point
Butut, the distribution map includes two peak values spaced apart by the interior diameter of the ring around central channel, wherein the distribution map exists
It is identical in the conductive column of touch sensitive surface；
For receiving the device (260,270) of the reception signal exported by the conductiving metal part；
For analyzing the device (280,290) of digitized received signal；
For storing the device of the signal of the signal and analysis that send；
Interface for digital communication (295).
2. capacity-type electronic dog according to claim 1, it is characterised in that reception device includes:
It is known as the device (280) of " envelope detected ", is determining being sent in amplitude and frequency range by touch sensitive surface for detecting
Signal, to detect the presence of the capacitive touch sensitive surfaces, described device operates in passive mode, i.e., not by send fill
Set the signal transmission of progress；
Synchronous demodulation device (270) is operated with cyberdog frequency or multiple frequencies, so as in a receive mode with it is described touch-sensitive
Surface communication.
3. the capacity-type electronic dog according to one of preceding claims, it is characterised in that the thickness and condenser type of ring (210)
One spacing of the matrix of touch sensitive surface is equal.
4. capacity-type electronic dog according to claim 1, it is characterised in that cyberdog (200) include suction disc equipment (201,
202), allow to appropriate location cyberdog being maintained on capacitive touch sensitive surfaces.
5. a kind of visualization device, including capacitive touch sensitive surfaces (100), can with according to claim 1 to 4 one of them
The capacity-type electronic dog exchanges data, and the touch sensitive surface includes the matrix (110) of conductive row (111) and column (112),
It is characterized in that capacitive touch sensitive surfaces include:
For when cyberdog is placed on the touch sensitive surface, identifying that the device of determining distribution map, the distribution map are corresponding
In the variation by planar annular conductiving metal part on the row and column of matrix in caused capacitor；
Device for being sent and received with specific electron dog frequency,
Wherein, the variation in capacitor caused by the placement as cyberdog detected on the row of touch sensitive surface has symmetrical distribution
Figure, the distribution map includes two peak values spaced apart by the interior diameter of the ring around central channel, wherein the distribution map is touching
It is identical in the conductive column of sensitive surfaces.
6. visualization device according to claim 5, it is characterised in that the screen of visualization device includes by for cyberdog
Position retain special symbol label specific position.
7. a kind of method of communication, communication capacity-type electronic dog described according to claim 1 one of -4 with according to power
Benefit carries out between visualization device described in requiring 5 and 6, which is characterized in that cyberdog is being placed on capacitive touch sensitive surfaces
When upper, it the described method comprises the following steps:
Step 1: by the distribution map of the determination of the planar annular conductiving metal part of the identification device identification cyberdog of touch sensitive surface；
Step 2: the signal that the detection device identification by being known as the cyberdog of " envelope detected " is sent by touch sensitive surface in operation；
Step 3: the preparation of the cyberdog operation mode of touch sensitive surface, sending device are transformed into the mould for sending cyberdog frequency
Formula, the reception device of touch sensitive surface are transformed into the mode for receiving cyberdog frequency；
Step 4: operated in electronics dog pattern, touch sensitive surface and cyberdog with cyberdog frequency exchange signaling,
Wherein, the variation in capacitor caused by the placement as cyberdog detected on the row of touch sensitive surface has symmetrical distribution
Figure, the distribution map includes two peak values spaced apart by the interior diameter of the ring around central channel, wherein the distribution map is touching
It is identical in the conductive column of sensitive surfaces.
8. the method for communication according to claim 7, it is characterised in that in a half duplex mode execute step 4, cyberdog with
Touch sensitive surface is alternately sent and received with identical specific electron dog frequency.
9. the method for communication according to claim 7, it is characterised in that in the full-duplex mode execute step 4, cyberdog with
Touch sensitive surface is sent and received simultaneously with different specific electron dog frequencies.
10. the method for the communication according to one of claim 7 to 9, it is characterised in that during step 4, touch sensitive surface
The conductive row and column of transmission and receiving device only matrix of the scan arrangement below the planar annular conductiving metal part of cyberdog.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1303028A FR3015840B1 (en) | 2013-12-20 | 2013-12-20 | CAPACITIVE DONGLE FOR VISUALIZATION DEVICES HAVING A CAPACITIVE TOUCH SURFACE |
| FR1303028 | 2013-12-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104731431A CN104731431A (en) | 2015-06-24 |
| CN104731431B true CN104731431B (en) | 2019-09-17 |
Family
ID=50933192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410858248.1A Expired - Fee Related CN104731431B (en) | 2013-12-20 | 2014-12-19 | Capacity-type electronic dog for the visualization device including capacitive touch sensitive surfaces |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9665223B2 (en) |
| EP (1) | EP2891947B1 (en) |
| CN (1) | CN104731431B (en) |
| FR (1) | FR3015840B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9530318B1 (en) * | 2015-07-28 | 2016-12-27 | Honeywell International Inc. | Touchscreen-enabled electronic devices, methods, and program products providing pilot handwriting interface for flight deck systems |
| FR3086079B1 (en) * | 2018-09-17 | 2021-04-23 | Zodiac Aero Electric | MULTI-KEY TOUCH DEVICE WITH CAPACITIVE DETECTION |
| FR3097990B1 (en) | 2019-06-27 | 2021-05-21 | Thales Sa | TOUCH SURFACE WITH HYBRID TOUCH DETECTION |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013172829A1 (en) * | 2012-05-16 | 2013-11-21 | Blackberry Limited | Portable electronic device and method of controlling same |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8199114B1 (en) * | 2000-09-26 | 2012-06-12 | Denny Jaeger | Touch sensor control devices |
| TW201005613A (en) * | 2008-04-10 | 2010-02-01 | Atmel Corp | Capacitive position sensor |
| US9417738B2 (en) * | 2009-06-12 | 2016-08-16 | Synaptics Incorporated | Untethered active pen and a method for communicating with a capacitive sensing device using the untethered active pen |
| US8648837B1 (en) * | 2010-07-09 | 2014-02-11 | The United States Of America As Represented By The Secretary Of The Navy | Active capacitive control stylus |
| WO2012057887A1 (en) * | 2010-10-28 | 2012-05-03 | Cypress Semiconductor Corporation | Capacitive stylus with palm rejection |
| US8797301B2 (en) * | 2012-02-15 | 2014-08-05 | Cypress Semiconductor Corporation | Active stylus to host data transmitting method |
| US9013425B2 (en) * | 2012-02-23 | 2015-04-21 | Cypress Semiconductor Corporation | Method and apparatus for data transmission via capacitance sensing device |
| US9652090B2 (en) * | 2012-07-27 | 2017-05-16 | Apple Inc. | Device for digital communication through capacitive coupling |
-
2013
- 2013-12-20 FR FR1303028A patent/FR3015840B1/en active Active
-
2014
- 2014-12-16 EP EP14198224.9A patent/EP2891947B1/en active Active
- 2014-12-19 CN CN201410858248.1A patent/CN104731431B/en not_active Expired - Fee Related
- 2014-12-19 US US14/578,294 patent/US9665223B2/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013172829A1 (en) * | 2012-05-16 | 2013-11-21 | Blackberry Limited | Portable electronic device and method of controlling same |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150177883A1 (en) | 2015-06-25 |
| FR3015840A1 (en) | 2015-06-26 |
| US9665223B2 (en) | 2017-05-30 |
| EP2891947A1 (en) | 2015-07-08 |
| EP2891947B1 (en) | 2022-05-04 |
| CN104731431A (en) | 2015-06-24 |
| FR3015840B1 (en) | 2016-02-05 |
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